• 한국건설순환자원학회논문집
• /
• 제5권2호
• /
• pp.91-96
• /
• 2010

본 논문에서는 일반 보행자 도로의 형태 및 문제점을 찾아보고 공원 산책로 및 관광지의 보도 등과 같은 일반적인 보도용 포장체에 Wood Chip과 바인더로써 우레탄 수지를 사용하여 새로운 형태의 자원순환형 보도 포장체의 물성에 관한 연구를 실시하였다. 포장재의 물성실험은 인장강도 시험, 투수성 시험, 탄력성 시험, 침수후의 인장강도 변화 등을 실시하였고, 또한 2.5~5mm 크기의 잔골재를 사용한 효과에 대해서도 검토하였다. 인장강도 시험은 침수전과 침수후로 나누어 시험하였으며 침수전 1.06MPa, 침수후 0.67MPa의 인장강도를 나타내 36.8%의 인장강도 감소율을 나타내었다. 투수성 시험은 투수성 포장체의 현장 투수시험 방법에 의거해 실험하였으며 시험 결과 투수계수는 0.67~0.78mm/s의 값으로 모두 0.1mm/s 의 목표투수계수를 초과하였다. 탄력성 시험은 일본 도로협회의 탄력성시험방법에 따라 실시하였으며 GB계수 21%, SB계수 10%의 값을 나타냈고 잔골재의 양이 증가할수록 GB계수, SB계수 모두 점차 증가하는 경향을 나타냈었다.

• 대한소아치과학회지
• /
• 제38권1호
• /
• pp.33-41
• /
• 2011

본 연구의 목적은 상업용으로 시판되고 있는 수종의 치과용 접착제를 세대별로 분류하여 서로 다른 광원에 노출 시켜 중합하고 접착면의 전단 강도 측정을 통해 결합강도를 비교함으로써 간접적으로 광원에 따른 접착제의 중합 양상을 알아보고 소아치과 영역에서 가장 권장할만한 치과용 접착제와 광원 종류의 조합을 알아보고자 함이다. 본 연구에서는 최근에 개발된 치과용접착제를 대상으로 다른 유형의 광원으로 중합하였을 때 영구치 상아질에 대한 결합력 비교 평가하여 임상에서 상아질결합제와 광중합 시스템의 적절한 조합을 선택하는데 도움을 주고자 시행하였으며, 실험재료로 Adper Scotchbond Multi-purpose Plus Adhesive (SM; 3M ESPE, USA), Adper Single bond 2 (SB; 3M ESPE, USA), Clearfil SE Bond (SE; Kuraray Medical Inc., Japan), Adper Prompt L-Pop (PL; 3M ESPE, USA), GBond (GB; GC Cooperation Toyko, Japan)을 이용하여 Elipar Free light 2(LED; 3M ESPE, USA), OptiLux 501 (Halogen, Kerr, USA), Flipo (PAC, LOKKI, FRA) 세 가지의 광원으로 중합하고 전단결합강도를 평가한 뒤 다음과 같은 결과를 얻었다. 1. Freelight 2로 중합하였을 때 전단결합강도는 SM이 가장 높았으며($28.22{\pm}5.56$), SB($21.68{\pm}7.44$), SE($20.13{\pm}9.88$), PL($14.18{\pm}5.88$), GB($14.30{\pm}6.81$) 순이었다. SM은 PL, GB와 유의한 차이가 있었으나 (p<0.05), SB, SE, PL, GB 간에는 차이가 없었다. 2. Optiux 501로 중합하였을 때 전단결합강도는 SM이 가장 높았으며 ($22.06{\pm}7.95$), PL($12.94{\pm}4.96$), SB($12.80{\pm}3.35$), SE($12.43{\pm}4.79$), GB($10.00{\pm}3.47$) 순이었고, SM만 유의한 차이가 있었으나 (p<0.05), 다른 군 간에는 차이가 없었다. 3. Flipo로 중합하였을 때 전단결합강도는 SM이 가장 높았으며 ($26.82{\pm}11.16$), PL($15.42{\pm}9.35$), SB($10.96{\pm}3.74$), SE($9.39{\pm}3.74$), GB($7.85{\pm}2.22$) 순이었다. SM은 SB, SE, GB 군과 유의한 차이가 있었으나 (p<0.05), 다른 군 간에는 차이가 없었다. 4. 광원에 따른 차이는 SB와 GB에서만 유의성이 있었고, 다른 결합제에서는 유의한 차이가 없었다. 광원에 따른 유의성을 나타낸 결합제 중 SB는 Freelight 2가 다른 광원에 비해 유의한 차이를 보였고 OptiLux 501과 Flipo간의 차이가 없었던 반면, GB는 Freelight 2와 Flipo 간에만 유의한 차이를 나타냈다.

• 지식정보인프라
• /
• 통권2호
• /
• pp.36-40
• /
• 2000

SDB는 중국과학원의 전산정보센터(CNC-Computer Network information Center)을 포함한 22개 기관, 200명 이상의 연구원이 참여하고 있다. 전산망정보센터를 제외한 21개 기관에서 작성하는 전문 데이터베이스는 130개로 560GB에 이른다.

• Korean Journal of Acupuncture
• /
• 제28권1호
• /
• pp.91-100
• /
• 2011

Objectives : To classify needling or moxibustion-prohibited acupoints in Emergency Formulas Worth a Thousand in Gold (EFWTG) and Supplement to the Formulas Worth a Thousand in Gold (SFWTG). Methods : We found needling or moxibustion-prohibited acupoints in EFWTG and SFWTG, then investigated the influences of needling or moxibustion-prohibited acupoints on A-B Classic of Acupuncture and Moxibustion. Results : In EFWTG, the needling-prohibited points were LI13, ST17, BL56, TE8, CV8, CV15 and GV24. Acupoints needed careful needling were LU2, ST12, KI2, KI7, TE19, GB3 and jwagak. The moxibustion-prohibited points were LU3, LU8, ST1, ST8, ST9, ST17, ST32, ST33, BL6, BL30, TE18, TE23, GB33, GB42, CV5, CV15, GV6, GV15, GV16 and GV17. Acupoints needed careful moxibustion were ST7, ST30, TE21 and GB22. In SFWTG, the needling-prohibited points were LU2, LI13, ST12, ST17, ST32, BL56, KI2, KI7, TE8, TE19, GB3, CV8, CV15, GV24 and jwagak. The moxibustion-prohibited points were LU3, LU8, ST1, ST7, ST8, ST9, ST17, ST30, ST32, ST33, BL6, BL30, TE18, TE23, GB22, GB33, GB42, CV5, CV15, GV6, GV15, GV16, GV17 and ijung. Conclusions : There were 7 needling-prohibited points, 7 acupoints needed careful needling, 20 moxibustion-prohibited points, and 4 acupoints needed careful needling in EFWTG, and 15 needling-prohibited points and 24 moxibustion-prohibited points in SFWTG. The needling or moxibustion-prohibited acupoints in A-B Classic of Acupuncture and Moxibustion had a strong influence on those in the two literatures.

• Journal of Acupuncture Research
• /
• 제19권3호
• /
• pp.77-87
• /
• 2002

Like acupuncture, magnetic therapy has been known to yield effectiveness when it is applied to relieve from fatigue, musculoskelectal diseases, sore sites, rheumatic arthritis and chronic pain syndromes. However, combined application of acupuncture and magnet has not yet been studied. This study is designed to investigate effectiveness of acupuncture therapy when in the magnetic field for the pain relief. Magnetic field was made by magnetic ring ($7{\psi}{\times}2.3{\psi}{\times}1.5mm$). Twenty-one male swimmers with latent muscular pain at the GB21 area in the university course of physical education in Daegu were chosen and divided into three groups; 1) acupuncture treatment group (n=7), 2) acupuncture treatment with iron ring group (n=7), 3) acupuncture treatment with magnetic ring group (n=7). Manual Acupuncture was given to the GB21 point for 20 minutes. The degree of pressure pain threshold (PPT, $kg/cm^2$) in GB21 was measured with algometer. Before acupuncture treatment, the PPT values were $6.08{\pm}1.69$, $6.39{\pm}1.72$ and $5.59{\pm}1.11$ in acupuncture treatment group, acupuncture treatment with iron ring group, acupuncture treatment with magnetic ring group, respectively. After acupuncture treatment, the PPT values were $6.48{\pm}2.33$, $6.31{\pm}1.31$ and $6.59{\pm}1.80$, respectively. Pressure threshold was significantly increased in the acupuncture treatment with magnetic ring group compared to the other groups. Based on these results, acupuncture treatment with magnetic ring produced better effects on pain threshold, and these effects can be considered to be associated with the currents or voltages induced by the acupuncture needle and magnetic ring at present.

• 한방재활의학과학회지
• /
• 제23권3호
• /
• pp.37-44
• /
• 2013

Objectives The present study was designed to investigate the effects of bee venom extract pharmacopunctureon (BVP) at 肩井 (GB21) on the changes in regional cerebral blood flow (rCBF) and mean arterial blood pressure (MABP) in normal rats, and further to determine the mechanisms. Methods We purchased rats about 300g and prepared diluted BVP with normal saline. And we injected diluted BVP to rats gradually progressed from 0.001 mg/kg to 0.1 mg/kg at corresponding region to GB21. After injection, we measured the changes in rCBF and MABP of rats. In addition, to determine the mechanisms of this changes, we did the same experiments twice more after pretreatment with indomethacin and metylene blue separately. Results BVP significantly increased rCBF but decreased MABP, suggesting that BVP potently may increase rCBF by dilating pial arterial diameter. Furthermore, the increase of BVP-induced rCBF and the decrease of BVP-induced MABP were significantly blocked by pretreatment with cyclooxygenase inhibitor, indomethacin (1 mg/kg, i.p.). But the increase of BVP-induced rCBF and the decrease of BVP-induced MABP were not blocked by pretreatment with guanylate cyclase inhibitor, methylene blue (0.01 mg/kg, i.p.). Conclusions These findings indicate that the action of BVP is mediated by cyclooxygenase. Furthermore these results suggest that BVP can increase rCBF in normal state, as well as improve the stability of rCBF in ischemic state.

• Journal of Acupuncture Research
• /
• 제21권3호
• /
• pp.145-167
• /
• 2004

Objective : Neuropathic pain can be caused by a partial peripheral nerve injury. This kind of pain is usually accompanied by spontaneous burning pain, allodynia and hyperalgesia. It is not clear that scolopendrid aqua-acupuncture can control neuropathic pain effectively. The purpose of this study is to examine if scolopendrid aqua-acupuncture may be effective to the neuropathic pain (mechanical allodynia, cold allodynia) in a rat model of neuropathic pain. Methods : To produce the model of neuropathic pain, under isoflurane 2.5% anesthesia, tibial nerve and sural nerve was resected. After the neuropathic surgery, the author examined if the animals exhibited the behavioral signs of allodynia. The allodynia was assessed by stimulating the medial malleolus with von Frey filament and acetone. Three weeks after the neuropathic surgery, scolopendrid aqua-acupuncture was injected at Hwando(GB30) one time a day for one week. After that the author examined the withdrawl response of neuropathic rats' legs by von Frey filament and acetone stimulation. And also the author examined c-fos in the midbrain central gray of neuropathic rats and the change of WBC count in the blood of neuropathic rats. Results & Conclusion : 1. The scolopendrid aqua-acupuncture injected at Hwando(GB30) decreased the withdrawl response of mechanical allodynia in SHA-1, SHA-2 and SAH-3 group as compared with control group. 2. The scolopendrid aqua-acupuncture injected at Hwando(GB30) decreased the withdrawl response of chemical allodynia(cold allodynia) in SHA-1, SHA-2 and SAH-3 group as compared with control group. 3. The scolopendrid aqua-acupuncture injected at Hwando(GB30) showed the significant difference between sham group and control group(p=0.01), sham and SHA-3 group(p=0.026), control group and SHA-1 group(p=0.01), control group and SHA-2 group(p=0.024) in the c-fos expression. 4. The scolopendrid aqua-acupuncture injected at Hwando(GB30) showed the significant difference between sham group and SHA-3 group(p=0.010), control group and SHA-3 group(p=0.006) in the WBC count.

• 한국토양비료학회지
• /
• 제48권5호
• /
• pp.528-534
• /
• 2015

Green manure crops have been well recognized as the alternative for chemical fertilizer, especially N fertilizer, because of its positive effect on soil and the environment. Hairy vetch and green barley are the most popular crops for cultivation of rice in paddy field. This study was conducted to evaluate effects of hairy vetch and green barley on soil microbial community and chemical properties during short-term application (three years). For this study, treatments were composed of hairy vetch (Hv), green barley (Gb), hairy vetch + green barley (Hv+Gb), and chemical fertilizer without green manure crops (Con.). Hv+Gb treatment showed the highest microbial biomass among treatments. Principal component analysis (PCA) showed that PC1 (73.0 %) was affected by microbial biomass and PC2 (21.5 %) was affected by fungi, cy19:0/18:$1{\omega}7c$ (stress indicator). Combined treatment with hairy vetch and green barley could be more efficient than green manure crop treatment as well as chemical fertilizer treatment for improvement of soil microorganisms.

• Korean Journal of Acupuncture
• /
• 제27권2호
• /
• pp.57-70
• /
• 2010

Objectives : To investigate the meaning and the importance of needling or moxibustion- prohibited acupoints in Chimgugapeulgyeong(鍼灸甲乙經). Methods : We found needling or moxibustion-prohibited acupoints in Chimgugapeulgyeong, then investigated the causes of the prohibitions from the various literatures and the anatomical structures near the acupoints. Results : In Chimgugapeulgyeong, the needling and moxibustion-prohibited points were ST9, ST17, ST32, CV5, and CV15. The needling-prohibited points were LU2, LI13, ST12, BL56, KI2, KI7, TE8, TE19, GB3, CV8, GV24, and jwagak(左角). The moxibustion-prohibited points were LU3, LU8, ST1, ST7, ST8, ST30, ST33, BL5, BL6, BL15, BL30, TE18, TE21, TE23, GB22, GB33, GB42, GV6, GV15, GV16, GV17 and GV25. The major cause of developing prohibited needling or moxibustion was due to the possibility to damage vessels or organs near them; other causes were side effects brought by applying wrong stimulating method or inducing women sterilized. Conclusions : The prohibition of needling or moxibustion on the points found in Chimgugapeulgyeong had acceptable causes. Therefore the techniques of needling or moxibustion on the acupoint should be performed with care.

• Journal of Gastric Cancer
• /
• 제19권4호
• /
• pp.417-426
• /
• 2019

Purpose: Although an increased incidence of gallbladder (GB) stone formation after gastrectomy has been reported, its etiology remains uncertain. The goal of this study was to explore the incidence of gallstone formation after gastrectomy in gastric cancer patients and investigate the risk factors therein. Materials and Methods: Medical records of patients who underwent curative gastrectomy, performed by a single surgeon between August 2012 and December 2015 at the Asan Medical Center, were retrospectively reviewed. Baseline characteristics and surgical outcomes, including GB stone gallstone formation after gastrectomy, were analyzed. Results: Of 561 patients included in the study, 36 presented with GB stone formation after gastrectomy for gastric cancer. The incidence of gallstone formation was 6.4%. The mean interval between gallstone formation and gastrectomy was 21.9 months. In multivariate analyses, the incidence of gallstone formation increased in patients 63 years or older, with greater than 6.2 kg weight loss in the first 6 months after the procedure, a preoperative serum total bilirubin level greater than 0.5 mg/dL, and in patients who did not receive adjuvant chemotherapy. Conclusions: This study presented risk factors for GB stone formation after gastric cancer surgery, and special attention should be afforded to patients with such risk factors.